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* [http://geocoder.us/ geocoder]
* [http://geocoder.us/ geocoder]
* You can get coordinates from UK post-codes from [http://www.streetmap.co.uk streetmap]
* You can get coordinates from UK post-codes from [http://www.streetmap.co.uk streetmap]
* Worldwide city level location data (over 4 million entries) is available from the [http://earth-info.nga.mil/gns/html/ GNS]. This is accessible as a REST service from [http://brainoff.com/geocoder/]
== Plazes ==
== Plazes ==

Revision as of 17:23, 28 June 2005

Location Formats


This is a list of previous efforts at location / geographic ("Geo") data formats and protocols, as background research for developing a location format.

vCard & hCard

vCard (RFC2426) and hcard includes 'adr', a way to markup addresses. There is also a field called 'geo' for lat/long.


Comma seperated list of lat/long <meta name="ICBM" content="XXX.XXXXX, XXX.XXXXX"> [1]


Flickr Geotags


A2B is a location based search engine. Lat and long only. Seems to pick stuff up from geo meta tags. Pages can either be manually entered or pinged. They support lat/long and ICBM meta tags.


Several people have tried putting geographic information into RSS.


Both of these systems are freely available sources of address to lat/long mappings (US only). I think they're based on US Census data, so they might be up to date.


Plazes is a system that does geo-info based on the network access point that the user's computer is connected to. They use tagging to identify locations.

Mapping Sites

Semantic Web


Geographic Markup Language

location-formats was last modified: Wednesday, December 31st, 1969